Reactive dyes, processes for the preparation thereof and the use thereof
US6518409B2 · kind B2 · utility
1Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2001 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Jul 18, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/4413
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Reactive dyes of formula whereinR1 and R2 are each independently of the other hydrogen or unsubstituted or substitutedC1-C4alkyl,A is C2-C8alkylene interrupted by oxygen,X is halogen, andY is a fiber-reactive radical of formula (2)—SO2—Z  (2) whereinZ is vinyl or a radical —CH2—CH2—U and U is a group removable under alkaline conditions, are suitable especially for dyeing cotton and yield dyeings having good allround properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.